Wristwatch



FIG. 1 is a top view of the wristwatch that comprises my invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top perspective view thereof.

The broken lines are used in the drawings to show portions of the wristwatch that do not form part of the claimed design. 

CLAIM The ornamental design for a wristwatch, as shown and described. 